# Alt Process Exposure Cal — Stouffer calibration > Calculates standard exposure for alternative photographic printing. (iPhone/iPad app by Vanessa Short.) - Source: https://appshunter.io/ios/app/alt-process-exposure-cal/id6753609684 (this page in markdown: same URL + `.md`) - Developer: [Vanessa Short](https://appshunter.io/developer/1843973608) - Category: Productivity, Graphics & Design - Price: $2.99 with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 23 MB - Languages: American English - Released: 2025-10-30 - Data updated: 2026-08-20 - Monetization: subscription - User reviews in markdown: https://appshunter.io/ios/app/alt-process-exposure-cal/id6753609684/reviews.md ## What is Alt Process Exposure Cal? Alt Process Exposure Calc helps you lock in a reliable “standard exposure” for alternative photographic printing. Enter your baseline time, the first max-black step from a wedge where you can not see a line from the transparency or white if you are calibrating polymer, and steps-per-stop—then the app does the maths and records your setup. Made for Cyanotype, Platinum/Palladium, Salt, Carbon, Photopolymer & other alt processes. What it does: Calculates a precise standard exposure from a step wedge. Simple process picker (Cyanotype, Platinum/Palladium, Salt, Carbon, Photopolymer, Other). Optional notes for paper, ink, and aquatint timing. Export your records to Google Sheets (with an included Apps Script you paste once). Newest-first log with pastel row tinting by process. How export works You’ll paste a small, safe Google Apps Script into a Sheet (instructions in-app). Tap Export to push a new row with the date, process, exposure, and notes. The sheet auto-formats and keeps the latest records at the top. Why it helps records exposures across papers and processes A clean archive of what actually worked Subscription Alt Process Exposure Calc uses an auto-renewing yearly subscription for full access (pricing shown in-app). • Payment is charged to your Apple ID at confirmation of purchase. • Subscription renews automatically unless cancelled at least 24 hours before the end of the period. • Manage or cancel in Settings → Apple ID → Subscriptions. Happy printing! Full access is available with an annual subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://itsasalfordthing.squarespace.com/privacy-policy-exposure-calculator ## Key features - Standard exposure calculation - Process picker (Cyanotype, Platinum/Palladium, etc.) - Optional notes for timing - Export records to Google Sheets - Newest-first log with tinting - Clean archive of successful exposures ## Pricing and in-app purchases Base price: $2.99. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Yearly subscription access | $2.99 | per year | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/alt-process-exposure-cal/id6753609684/reviews.md ### 1/5 — Pointless *2026-04-10* App doesn’t work. A pop up tells you to go pro, and even when you do the pop up does not go away - so you can’t actually use the app. Waste of money ## Frequently asked questions about Alt Process Exposure Cal ### What is Alt Process Exposure Cal used for? Alt Process Exposure Cal is designed to help alternative photographic printers determine a reliable standard exposure for their prints. It calculates precise exposures based on user-inputted data from step wedges. ### What alternative photographic processes does Alt Process Exposure Cal support? The app supports a range of processes including Cyanotype, Platinum/Palladium, Salt, Carbon, and Photopolymer. It also includes an 'Other' option for less common methods. ### Can I save my exposure calculations with Alt Process Exposure Cal? Yes, the app maintains a log of your exposures, sorted by newest first, with pastel row tinting to differentiate processes. This creates a clean archive of what worked for your specific papers and inks. ### How does exporting work in Alt Process Exposure Cal? You can export your calibration records to Google Sheets using a provided Apps Script. This script, once pasted into your sheet, allows you to push new rows with date, process, exposure, and notes. ### What is the pricing for Alt Process Exposure Cal? Alt Process Exposure Cal operates on a yearly subscription model. The exact pricing is displayed within the app, and it is charged to your Apple ID upon purchase confirmation. ### How do I cancel my Alt Process Exposure Cal subscription? Your subscription will automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription by going to Settings → Apple ID → Subscriptions. ### Is Alt Process Exposure Cal available on Android? Based on the provided data, Alt Process Exposure Cal is available on iPhone, iPad, and iPod. There is no mention of Android support. ### How often is Alt Process Exposure Cal updated? The app was last updated on October 30, 2025, with version 1.0.1. This indicates a recent update, and users can expect ongoing support and potential future enhancements. ## Version history (last 1 release) ### 1.0.1 — 2025-10-30 No release notes. ## More apps by Vanessa Short - [Alt Exposure Cal and washout](https://appshunter.io/ios/app/alt-exposure-cal-and-washout/id6759231806) All apps by Vanessa Short: https://appshunter.io/developer/1843973608 ## Related topics [exposure ed](https://appshunter.io/ios/topics/exposure-ed) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*